Shares of SEALSQ Corp (LAES) declined 0.85% on Friday, closing at $2.3399 as the stock retraced from morning session highs. The movement came as the company announced that its Miraex division has transitioned into worldwide commercial operations, representing a significant step in SEALSQ's quantum technology roadmap across multiple industry verticals.

The transition marks Miraex's evolution from laboratory-stage development into active market deployment, targeting telecommunications, computational systems, advanced sensing, and aerospace sectors. The move comes amid intensifying global competition in quantum technology, where governments and corporations across the United States, European Union, and China are directing billions in funding toward quantum computing, secure communications, and sensing capabilities.

SEALSQ Integrates Miraex to Strengthen Quantum Portfolio

SEALSQ completed its full acquisition of Miraex SA on June 2, 2026, gaining complete control of the Swiss photonics company. The acquisition was financed through SEALSQ's dedicated $200 million Quantum Fund, established specifically for strategic investments across emerging quantum sectors. To date, SEALSQ has allocated over $65 million from the fund toward quantum initiatives, technology acquisitions, and international infrastructure development.

Headquartered at Switzerland's EPFL Innovation Park in Ecublens, Miraex now operates as SEALSQ's dedicated quantum photonics division. EPFL is one of Europe's leading quantum and photonic research institutions, and Miraex's location there has provided access to advanced fabrication and testing infrastructure during its development phase. The company brings a photonic interconnection system designed to enable quantum processors to interface with extended-range optical transmission networks. This integration supports SEALSQ's broader strategy of building a sovereign technology stack that includes processors, cryptographic systems, network architecture, computational resources, communication channels, and digital platforms.

SEALSQ's existing operations span secure semiconductor manufacturing, quantum-resistant cryptographic solutions, trusted computing frameworks, and quantum network technologies for enterprise and government clients. Quantum-resistant cryptography has gained urgency as the U.S. National Institute of Standards and Technology continues finalizing post-quantum encryption standards, pushing defense, financial, and telecommunications organizations to prepare for cryptographic transitions. The Miraex acquisition adds interconnection infrastructure for transmitting quantum data among distributed processors, facilities, orbital assets, and communication channels with enhanced security. The expansion also reinforces SEALSQ's presence in cybersecurity, telecommunications, cloud services, defense contracting, infrastructure protection, and secure satellite communications.

Commercial Deployment Targets Four Quantum Sectors

Miraex has developed a Thin Film Lithium Tantalate Photonic Integrated Circuit solution that enables quantum signal transformation and system integration. The technology translates data between processor microwave frequencies and the optical wavelengths used in protected communication infrastructures and satellite connections. This translation capability addresses a widely recognized engineering challenge in quantum computing: most quantum processors operate at microwave frequencies that degrade rapidly over distance, while optical fibers can carry signals over kilometers with minimal loss. Bridging these two domains is considered essential for scaling quantum systems beyond single-room installations. This supports modular quantum architectures, allowing independent processors to aggregate computational power through secure photonic links across geographic distances.

SEALSQ plans to address four key areas during Miraex's initial market rollout:

• Distributed quantum computation: Linking multiple smaller processing units into unified large-scale computational platforms, expanding capability without centralized quantum hardware dependencies.
• Quantum network infrastructure: Enabling protected optical connections, encryption key distribution, secure data transmission, and next-generation internet backbone development.
• Quantum sensing: Supporting positioning systems, military applications, manufacturing oversight, and critical infrastructure operations independent of traditional GPS dependencies.
• Space-based communications: Deploying radiation-resistant photonic components for satellite platforms, encrypted communications, orbital infrastructure, and space-based quantum networking.

SEALSQ anticipates establishing collaborations with government agencies, telecommunications carriers, cloud infrastructure providers, research institutions, defense contractors, and industrial organizations seeking scalable quantum solutions.